WO2007109632A3 - Systems, methods, and apparatus for exposure control - Google Patents

Systems, methods, and apparatus for exposure control Download PDF

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Publication number
WO2007109632A3
WO2007109632A3 PCT/US2007/064332 US2007064332W WO2007109632A3 WO 2007109632 A3 WO2007109632 A3 WO 2007109632A3 US 2007064332 W US2007064332 W US 2007064332W WO 2007109632 A3 WO2007109632 A3 WO 2007109632A3
Authority
WO
WIPO (PCT)
Prior art keywords
exposure control
pixels
methods
systems
classified according
Prior art date
Application number
PCT/US2007/064332
Other languages
French (fr)
Other versions
WO2007109632A2 (en
Inventor
Shuxue Quan
Chinchuan Andrew Chiu
Xiaoyun Jiang
Original Assignee
Qualcomm Incorporated
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to JP2009501687A priority Critical patent/JP2009535865A/en
Priority to EP07758844.0A priority patent/EP1996913B1/en
Priority to CN2007800076969A priority patent/CN102017608B/en
Publication of WO2007109632A2 publication Critical patent/WO2007109632A2/en
Publication of WO2007109632A3 publication Critical patent/WO2007109632A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control
    • H04N1/62—Retouching, i.e. modification of isolated colours only or in isolated picture areas only
    • H04N1/628—Memory colours, e.g. skin or sky
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing
    • G06V10/26—Segmentation of patterns in the image field; Cutting or merging of image elements to establish the pattern region, e.g. clustering-based techniques; Detection of occlusion
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/40—Extraction of image or video features
    • G06V10/50—Extraction of image or video features by performing operations within image blocks; by using histograms, e.g. histogram of oriented gradients [HoG]; by summing image-intensity values; Projection analysis
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/10—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/61—Control of cameras or camera modules based on recognised objects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/61—Control of cameras or camera modules based on recognised objects
    • H04N23/611—Control of cameras or camera modules based on recognised objects where the recognised objects include parts of the human body
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/71—Circuitry for evaluating the brightness variation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/80—Camera processing pipelines; Components thereof
    • H04N23/84—Camera processing pipelines; Components thereof for processing colour signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Studio Devices (AREA)
  • Image Processing (AREA)
  • Exposure Control For Cameras (AREA)
  • Color Image Communication Systems (AREA)
  • Image Analysis (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Input (AREA)
  • Color Television Image Signal Generators (AREA)

Abstract

Embodiments include methods of image processing in which pixels of an image are classified according to color. An exposure control operation is performed according to the pixel classifications. In one example, the pixels are classified according to a predetermined segmentation of a color space, based on predicted sensor responses. In another example, the pixels are classified according to a color selected from among at least two colors.
PCT/US2007/064332 2006-03-17 2007-03-19 Systems, methods, and apparatus for exposure control WO2007109632A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2009501687A JP2009535865A (en) 2006-03-17 2007-03-19 System, method and apparatus for controlling exposure
EP07758844.0A EP1996913B1 (en) 2006-03-17 2007-03-19 Systems, methods, and apparatus for exposure control
CN2007800076969A CN102017608B (en) 2006-03-17 2007-03-19 Systems, methods, and apparatus for exposure control

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/378,720 US8107762B2 (en) 2006-03-17 2006-03-17 Systems, methods, and apparatus for exposure control
US11/378,720 2006-03-17

Publications (2)

Publication Number Publication Date
WO2007109632A2 WO2007109632A2 (en) 2007-09-27
WO2007109632A3 true WO2007109632A3 (en) 2011-04-07

Family

ID=38517350

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/064332 WO2007109632A2 (en) 2006-03-17 2007-03-19 Systems, methods, and apparatus for exposure control

Country Status (6)

Country Link
US (2) US8107762B2 (en)
EP (1) EP1996913B1 (en)
JP (3) JP2009535865A (en)
KR (1) KR101002195B1 (en)
CN (1) CN102017608B (en)
WO (1) WO2007109632A2 (en)

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Also Published As

Publication number Publication date
KR101002195B1 (en) 2010-12-20
JP5318838B2 (en) 2013-10-16
JP2011061809A (en) 2011-03-24
CN102017608A (en) 2011-04-13
US20070216777A1 (en) 2007-09-20
US8824827B2 (en) 2014-09-02
US20120105675A1 (en) 2012-05-03
EP1996913B1 (en) 2019-04-17
CN102017608B (en) 2013-03-20
JP2013081209A (en) 2013-05-02
KR20080109026A (en) 2008-12-16
WO2007109632A2 (en) 2007-09-27
US8107762B2 (en) 2012-01-31
EP1996913A2 (en) 2008-12-03
JP2009535865A (en) 2009-10-01

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